Television – Bandwidth reduction system – Plural video programs in single channel
Patent
1995-01-27
1996-04-02
Groody, James J.
Television
Bandwidth reduction system
Plural video programs in single channel
348441, H04N 712
Patent
active
055045286
ABSTRACT:
A video transmission apparatus that has a first input terminal for receiving a low-resolution TV signal. The apparatus also has a second input terminal for receiving a high-resolution TV signal and for outputting said high-resolution TV signal. The apparatus converts the low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal. The apparatus selects either the signal, which has been produced by converting low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal, or the high-resolution TV signal, which is outputted from the second input terminal The signal, which has been produced by converting low-resolution TV signal into a signal having a format which is equal to that of the high-resolution TV signal, is fitted into the high-resolution TV signal. The apparatus encodes the selected signal into a digital high-efficiency coded signal, and outputs a signal indicative thereof. Finally, the apparatus transmits the signal produced by encoding the selected signal.
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Stan Baron, "HDTV Production: A Low-Cost . . . " 8012 SMPTE Journal 101(1992) Jan., No. 1 pp. 6-9.
Ishikawa Tatsuya
Koshiro Natsuki
Grant Chris
Groody James J.
Kabushiki Kaisha Toshiba
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